Well, it looks like Mimio's touch technology (or somthing very similar) has been integrated into the Epson Brightlink. the 595 wi series, and the professional series, now uses pens, and this touch field technology. So now, there's no real need for the pens except to get exceptional integration with your software.
Along with that, Epson has also integrated wireless technologies that allow you to wireless project Android, iPhone, and iPad devices directly to the projector. Wow!
Epson is making strong advances in the interactive projector market,, and i can't wait to see what will come next. stay tuned!